SuperFish Undergravel Aquarium Fish Cave - Medium\nCreate a unique breeding and hiding place for Corydoras and other bottom-dwelling fish with the SuperFish Undergravel Fish Caves. Available in 2 sizes to suit a variety of requirements, the Undergravel Fish Caves are made from high quality ceramic, perfect for creating a long lasting shelter without disrupting the look of your aquarium. How Do I Use The SuperFish Undergravel Fish Cave?Easy to use, simply position the SuperFish Fish Cave at the front of the aquarium and cover with a suitable substrate. This design ensures a safe sanctuary whilst allowing unobstructed viewing of your fish and their offspring.\n\nSuperFish Undergravel Aquarium Fish Cave - Medium\n\nCreate a unique breeding and hiding place for Corydoras and other bottom-dwelling fish with the SuperFish Undergravel Fish Caves. Available in 2 sizes to suit a variety of requirements, the Undergravel Fish Caves are made from high quality ceramic, perfect for creating a longy